21490694

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{389}}^1\times {\mathrm{1201}}^1$

素因数の和:1615

約数の個数: 16

約数和(自身を含む): 33752160

約数和(自身を除く): 12261466

約数列:

[1, 2, 23, 46, 389, 778, 1201, 2402, 8947, 17894, 27623, 55246, 467189, 934378, 10745347, 21490694]

約数ペア:

[(1, 21490694), (2, 10745347), (23, 934378), (46, 467189), (389, 55246), (778, 27623), (1201, 17894), (2402, 8947)]